At 15:01 1998-10-01 -0400, Todd wrote:
>clear. If you consult the USDA nutrient database you'll find
>that the vitamin C content of beef, etc. is zero.
It can be that it just is not measured, because it was not expected to
be present. In the database of sugar type content there is
accompanying data telling wich codes for the main data, how it was
measured and if it was not.